Yolanda slides a 60.0-kg crate up an inclined ramp theat is 2.0-mlong attached t

Question

Yolanda slides a 60.0-kg crate up an inclined ramp theat is 2.0-mlong attached to a platform that is 1.0-m above floor level. A400.0-N force, parallel to the ramp, is needed to slide the crateup the ramp at a constant speed.    a. How much work must Yolanda do insliding the crate up the ramp    b. How much work would be done if Yolandasimply lifted the crate straight from the floor to the platform?    a. How much work must Yolanda do insliding the crate up the ramp    b. How much work would be done if Yolandasimply lifted the crate straight from the floor to the platform?

Explanation / Answer

part a)
W = Fd = (400N)(2m) = 800 N*m = 800 Joules
part b) Energy required is equal to the boxes potential energy as itsits 1 meter above ground so..
W = mgh = (60kg)(9.8m/s2)(1m) = 588 Joules

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